Lightroom classic > Import > Import window > choose the folder to import from your computer... all the files appear in the import window. THERE. We should have a button to check on or off if we want to include or exclude video filess for this import to Lightroom catalog
I think many of us do have some folder mixing both photos and videos
It is not great to import a full folder, then try to find the video files here and there in the catalog to then remove them (same not great action if you do this in the import window by hand)